Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The start of May brings a rise in the average high-temperature, moving from a cool 52.3°F (11.3°C) in April to a comfortable 62.4°F (16.9°C). During the nights in May, Underwood Heights experiences a consistent average temperature of 40.8°F (4.9°C).Humidity
In May, the average relative humidity is 70%.Rainfall
In May, the rain falls for 12.8 days. Throughout May, 1.69" (43mm) of precipitation is accumulated. Throughout the year, in Underwood Heights, there are 159.7 rainfall days, and 31.42" (798mm) of precipitation is accumulated.Snowfall
In Underwood Heights, snow does not fall in April through October.Daylight
The average length of the day in May is 14h and 57min.On the first day of May, sunrise is at 5:52 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:48 pm PDT.
Sunshine
In Underwood Heights, the average sunshine in May is 9.8h.UV index
The average daily maximum UV index in May in Underwood Heights is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In May, a daily maximum UV index of 4 leads to the following instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Underwood Heights?
What is the average humidity in May in Underwood Heights?
How much does it rain in Underwood Heights in May?
When it does not snow in Underwood Heights?
What is the average length of the day in May in Underwood Heights?
What time are sunrise and sunset in May in Underwood Heights?
How long on average sun shines in May in Underwood Heights?
How high is the UV index in May in Underwood Heights?
Average temperature in May
Underwood Heights, WA
- Average high temperature in May: 62.4°F
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (36°F).
- Average low temperature in May: 40.8°F
The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is December (27°F).
Average pressure in May
Underwood Heights, WA
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in May
Underwood Heights, WA
- Average wind speed in May: 5.7mph
The windiest month (with the highest average wind speed) is June (6.1mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).
Average humidity in May
Underwood Heights, WA
- Average humidity in May: 70%
The months with the highest relative humidity are February and December (88%).
The month with the lowest relative humidity is July (59%).
Average rainfall in May
Underwood Heights, WA
- Average rainfall in May: 1.69"
The wettest month (with the highest rainfall) is January (5.67").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in May
Underwood Heights, WA
- Average rainfall days in May: 12.8 days
The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is August (4.2 days).
Average snowfall in May
Underwood Heights, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (4.76").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Underwood Heights, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is December (4.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Underwood Heights, WA
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 9h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Underwood Heights, WA
- Average sunshine days in May: 15.6 days
The month with the most sunshine days is July (25.4 days).
The month with the least sunshine days is March (8.4 days).
Average UV index in May
Underwood Heights, WA
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in May
Underwood Heights, WA
- Average cloud cover in May: 40
The months with the most cloud cover are January and February (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in May
Underwood Heights, WA
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (4mi).
Underwood Heights, Washington, USA
Weather forecast for your location
2. Allow the app to use your location